Which of the following is an autocatalytic reaction? Photochemical reactions Microbial fermentation reaction Ammonia synthesis reaction Enzyme fermentation reaction TRUE ANSWER : ? YOUR ANSWER : ?
For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good. τ = θ , when the fluid density changes in the reactor τ and θ are always equal τ = θ , for a non-isothermal reactor τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant TRUE ANSWER : ? YOUR ANSWER : ?
A balanced chemical reaction equation conforms to the law of None ofthese Conservation of mass Gaseous volumes Avagadro's hypothesis TRUE ANSWER : ? YOUR ANSWER : ?
Space time equals the mean residence time For CSTR For narrow diameter tubular reactor For large diameter tubular reactor When the density of the reaction mixture is constant TRUE ANSWER : ? YOUR ANSWER : ?
Radioactive decay follows __________ order kinetics. First Third Zero Second TRUE ANSWER : ? YOUR ANSWER : ?
In which of the following gaseous phase reversible reactions, the product yield can not be increased by the application of high pressure? 2SO₂ + O₂ ⇋ 2SO₃ PCl3 + Cl₂ ⇋ PCl5 N₂ + O₂ ⇋ 2NO N + 3H₂ ⇋ 2NH₃ TRUE ANSWER : ? YOUR ANSWER : ?
In an exothermic chemical reaction, the reactants compared to the products have Higher temperature More energy Same energy Less energy TRUE ANSWER : ? YOUR ANSWER : ?
The concentration of A in a first order reaction, A → B, decreases Exponentially with time Linearly with time Logarithmically with time Very abruptly towards the end of the reaction TRUE ANSWER : ? YOUR ANSWER : ?
Rate of a chemical reaction is not affected by the Catalyst Number of molecules of reactants taking part in the reaction Temperature Reactant's concentration TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a dimension-less group used in catalysis ? (where, D = dispersion co-efficient, cm² /sec.D1 = diffusion co-efficient; cm²/sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm³/sec . V = volume, cm³.) Thiele modulus (L√(k/D1) Reactor dispersion number (D/vL) Reduced time (vt/V) None of these TRUE ANSWER : ? YOUR ANSWER : ?